A MetaProperty with a [[UnitItem}]] is used to provide a property with a particular entity (eg ampere, volt, etc.).
- Locate an existing or create a new Selective List
- Assign the list to the SELECTIVELIST attribute either by
- dragging and dropping the list object onto the cell
- selecting the desired list from the dialog appearing after double-clicking the cell
The property values can not be edited manually anymore but selected from the list.